USER S GUIDE - Vaisala 2_____ product description vaisala _____ 3

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  • PTB220 Series DigitalBarometers

    USER'S GUIDEM210194EN-A

    AUGUST 2001

  • _________________________________________________________________________CONTENTS

    VAISALA ___________________________________________________________________________I

    Table of contentsCHAPTER 1 GENERAL INFORMATION.............................................................1

    Safety ..............................................................................................1Warranty .........................................................................................2

    CHAPTER 2 PRODUCT DESCRIPTION .............................................................3Introduction....................................................................................3BAROCAP pressure sensor .......................................................4Measurement principle..................................................................6Block diagram ................................................................................7

    CHAPTER 3 GETTING STARTED.......................................................................9CHAPTER 4 COMMISSIONING.........................................................................11

    Operating modes .........................................................................12SMODE Selecting the sending mode.......................................12MMODE Selecting the measurement mode.............................13PULSE Selecting the PULSE output mode ..............................14

    Software settings.........................................................................16SERI Serial bus settings...........................................................16ECHO Setting the serial bus echo on/off..................................17FORM Defining the output format.............................................17EFORM Defining the error output format .................................22DFORM Defining the display format.........................................22UNIT Setting the pressure and temperature units....................25HHCP Setting the height of height correction...........................25AVRG Setting the averaging time.............................................26INTV Setting the output interval................................................27ADDR Setting the barometer address (for POLL mode) ..........27SCOM User specific SEND command .....................................28PSTAB Setting the pressure stability indicator.........................29PLARM Setting the pressure alarm levels................................30PDMAX Setting the pressure difference limit ...........................30KEYLOCK Setting the keyboard lock on/off .............................32

    Hardware settings........................................................................33CHAPTER 5 INSTALLATION.............................................................................37

    Mounting.......................................................................................37Electrical connections.................................................................38Grounding.....................................................................................40Pressure connections .................................................................41

    CHAPTER 6 OPERATING..................................................................................43RUN and STOP modes ................................................................43

    R Starting the continuous output ..............................................44S Stopping the output ...............................................................44SEND Outputting a single message only .................................45V Verification message.............................................................45DNOS Self-diagnostics .............................................................45

  • USER'S GUIDE_______________________________________________________________________

    II_____________________________________________________________________ M210194EN-A

    TRACK Setting the pressure tracking mode on/off.................. 46PLIM Pressure limit listing........................................................ 46RESET Resetting the barometer ............................................. 47

    POLL mode .................................................................................. 48SEND Outputting one single message .................................... 48OPEN Setting a barometer from POLL mode to STOP mode. 49CLOSE Setting a barometer from STOP mode to POLL mode49

    SEND mode.................................................................................. 50PULSE mode................................................................................ 51Operating the local display and keyboard................................ 51

    CHAPTER 7 ADJUSTMENT AND CALIBRATION........................................... 55Introduction ................................................................................. 55

    CORR Listing linear and multipoint corrections ....................... 57LC Linear corrections............................................................... 59MPC Multipoint corrections ...................................................... 60

    Offset and gain adjustment........................................................ 61LCI Entering linear corrections................................................. 61

    Multipoint adjustment................................................................. 62MPCI Entering multipoint corrections ...................................... 62

    Calibration ................................................................................... 63CALD Storing the new date of calibration................................ 64

    CHAPTER 8 SELF-TESTING AND PROBLEM HANDLING ............................ 65Returning the serial communication parameters .................... 65Diagnostic commands................................................................ 66

    ? Basic information on the barometer settings ....................... 66VERS Software version ........................................................... 67SNUM Serial number ............................................................... 67ERRS Error message output .................................................. 67TEST n Testing transducer operation...................................... 68C n Listing transducer coefficients ........................................... 69PTEST Testing pulse output mode.......................................... 69

    CHAPTER 9 TECHNICAL SPECIFICATIONS .................................................. 71Barometric pressure ................................................................... 71

    Operating range ....................................................................... 71Accuracy ...................................................................................... 71General ......................................................................................... 72Mechanics.................................................................................... 73Electromagnetic compatibility................................................... 73Options......................................................................................... 74Accessories ................................................................................. 74

    APPENDIX A HARDWARE CONFIGURATIONS............................................... 77APPENDIX B PIN ASSIGNMENTS..................................................................... 79APPENDIX C RS232C/TTL LEVEL SERIAL INTERFACE ................................ 81APPENDIX D PULSE OUTPUT MODE............................................................... 83APPENDIX E ANALOG OUTPUT....................................................................... 87

    Pin assignment............................................................................ 90

  • _________________________________________________________________________CONTENTS

    VAISALA __________________________________________________________________________III

    APPENDIX F MULTIPLE PTB220 BAROMETERS ON RS232C.......................91APPENDIX G OPTIONAL RS485/422 INTERFACE OF PTB220 BAROMETERS93APPENDIX H SERIAL INTERFACE COMMANDS .............................................97

    Commissioning commands........................................................97Operating commands..................................................................97Maintenance commands .............................................................98Diagnostic commands ................................................................98

    APPENDIX I CHECKSUM ..................................................................................99APPENDIX J PRESSURE TENDENCY ............................................................101APPENDIX K ERROR MESSAGES...................................................................102APPENDIX L SPECIAL EMULATION MODE...................................................103

    PA11A..........................................................................................103P Mode....................................................................................103Automode ...............................................................................104

    Setra 470 .....................................................................................105APPENDIX M PRESSURE CONVERSION CHART ..........................................107

  • CHAPTER 1_______________________________________________________ GENERAL INFORMATION

    VAISALA __________________________________________________________________________ 1

    CHAPTER 1 GENERAL INFORMATION

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